another not charging thread

I already replaced the alternator with a square back and grounded the second (lower) field to the body of the alternator case. The car is a 67 Belvedere. low deck stroker. still has the factory wiring.

The green wire only goes one place---from the VR FLD connection to the alternator field. Easy to check

so should I just run a wire from the top field of the alternator to the VR? to see if the wire is bad